<template>
  <view>
    <!--用户信息 开始-->
    <view class="user_info">
      <view class="user_icon">
        <image :src="imgDetail.user.avatar" mode="widthFix" />
      </view>
      <view class="user_desc">
        <view class="user_name">{{imgDetail.user.name}}</view>
        <view class="user_time">{{imgDetail.cnTime}}</view>
      </view>
    </view>
    <!--用户信息 结束-->

    <!--高清大图 开始-->
    <view class="high_img">
      <swiper-action @swiperAction="handleSwiperAction">
        <image mode="widthFix" :src="imgDetail.thumb" />
      </swiper-action>
    </view>
    <!--高清大图 结束-->

    <!--点赞 收藏 开始-->
    <view class="user_rank">
      <view class="rank">
        <text class="iconfont icondianzan">{{imgDetail.rank}}</text>
      </view>
      <view class="user_collect">
        <text class="iconfont iconshoucang">收藏</text>
      </view>
    </view>
    <!--点赞 收藏 结束-->

    <!--专辑 开始-->
    <view class="album_wrap" v-if="album.length">
      <!--标题-->
      <view class="album_title">相关</view>
      <!--内容-->
      <view class="album_list">
        <view class="album_item" v-for="item in album" :key="item.id">
          <!--专辑中左侧图片-->
          <view class="album_cover">
            <image :src="item.cover" mode="aspectFill" />
          </view>
          <!--专辑中右侧信息-->
          <view class="album_info">
            <view class="album_info_text">专辑</view>
            <view class="album_name">{{item.name}}</view>
            <text class="iconfont iconiconfontjiantou4"></text>
          </view>
        </view>
      </view>
    </view>
    <!--专辑 结束-->

    <!--最热评论 开始-->
    <view class="comment" v-if="hot.length">
      <view class="comment_title">
        <text class="iconfont iconhot1"></text>
        <text class="comment_text">最热评论</text>
      </view>
      <view class="comment_list">
        <view class="comment_item" v-for="item in hot" :key="item.id">
          <!--用户信息-->
          <view class="comment_user">
            <!--头像-->
            <view class="user_icon">
              <image :src="item.user.avatar" mode="widthFix" />
            </view>
            <!--名称信息-->
            <view class="user_name">
              <!--昵称-->
              <view class="user_nicename">{{item.user.name}}</view>
              <!--时间-->
              <view class="user_time">{{item.cnTime}}</view>
            </view>
            <!--徽章-->
            <view class="user_badge">
              <image :src="item2.icon" v-for="item2 in item.user.title" :key="item2.icon" />
            </view>
          </view>
          <!--评论信息-->
          <view class="comment_desc">
            <view class="comment_content">{{item.content}}</view>
            <view class="comment_like">
              <text class="iconfont icondianzan">{{item.size}}</text>
            </view>
          </view>
        </view>
      </view>
    </view>
    <!--最热评论 结束-->

    <!--最新评论 开始-->
    <view class="comment" v-if="comment.length">
      <view class="comment_title">
        <text class="iconfont iconpinglun"></text>
        <text class="comment_text">最新评论</text>
      </view>
      <view class="comment_list">
        <view class="comment_item" v-for="item in comment" :key="item.id">
          <!--用户信息-->
          <view class="comment_user">
            <!--头像-->
            <view class="user_icon">
              <image :src="item.user.avatar" mode="widthFix" />
            </view>
            <!--名称信息-->
            <view class="user_name">
              <!--昵称-->
              <view class="user_nicename">{{item.user.name}}</view>
              <!--时间-->
              <view class="user_time">{{item.cnTime}}</view>
            </view>
            <!--徽章-->
            <view class="user_badge">
              <image :src="item2.icon" v-for="item2 in item.user.title" :key="item2.icon" />
            </view>
          </view>
          <!--评论信息-->
          <view class="comment_desc">
            <view class="comment_content">{{item.content}}</view>
            <view class="comment_like">
              <text class="iconfont icondianzan">{{item.size}}</text>
            </view>
          </view>
        </view>
      </view>
    </view>
    <!--最新评论 结束-->

    <!--下载 结束-->
    <view class="download">
      <view class="download_btn" @click="handleDownload">下载图片</view>
    </view>
    <!--下载 结束-->
  </view>
</template>

<script>
import moment from "moment";
import swiperAction from "@/components/swiperAction";
//设置moment的语言为中文
moment.locale("zh-cn");
export default {
  data() {
    return {
      //图片信息对象 包含 用户头像...
      imgDetail: {},

      //高清图下面的专辑数据
      album: [],

      //最热评论
      hot: [],

      //最新评论
      comment: [],

      //图片的索引
      imgIndex: 0
    };
  },
  onLoad() {
    //对全局数据 进行解构 获取列表数据和索引
    const { imgIndex } = getApp().globalData;
    this.imgIndex = imgIndex;

    this.getData();
  },
  methods: {
    //给当前页面赋值
    getData() {
      const { imgList } = getApp().globalData;
      this.imgDetail = imgList[this.imgIndex];

      //对接口返回的时间戳进行格式转换
      this.imgDetail.cnTime = moment(this.imgDetail.atime * 1000).fromNow();

      //调用接口查询专辑/最新评论/热门评论
      this.getComments(this.imgDetail.id);
    },

    //获取评论数据
    getComments(id) {
      this.request({
        url: `http://157.122.54.189:9088/image/v2/wallpaper/wallpaper/${id}/comment`
      }).then(result => {
        this.album = result.res.album;

        //给hot/comment数组添加一个时间属性 xxx月前
        result.res.hot.forEach(
          v => (v.cnTime = moment(v.atime * 1000).fromNow())
        );

        result.res.comment.forEach(
          v => (v.cnTime = moment(v.atime * 1000).fromNow())
        );

        this.hot = result.res.hot;
        this.comment = result.res.comment;
      });
    },

    //滑动事件
    handleSwiperAction(e) {
      //左滑 下一张 this.imgIndex++
      //右滑 上一张 this.imgIndex--
      const { imgList } = getApp().globalData;

      if (e.direction === "left" && this.imgIndex < imgList.length - 1) {
        //加载下一张图
        this.imgIndex++;
        this.getData();
      } else if (e.direction === "right" && this.imgIndex > 0) {
        //加载上一张图
        this.imgIndex--;
        this.getData();
      } else {
        uni.showToast({
          title: "没有数据了",
          icon: "none"
        });
      }
    },

    //下载图片
    async handleDownload() {
      await uni.showLoading({title:'下载中'});

      //将远程文件下载到小程序内存中 tempFilePath
      const result1 = await uni.downloadFile({ url: this.imgDetail.img });
      const { tempFilePath } = result1[1];

      //将小程序内存中的临时文件下载到本地
     const result2 = await uni.saveImageToPhotosAlbum({filePath:tempFilePath});

     //提示用户下载成功
     uni.hideLoading();
     await uni.showToast({title:"下载成功"});
     
    }
  },
  components: {
    swiperAction
  }
};
</script>

<style lang="scss">
//用户信息
.user_info {
  display: flex;
  padding: 20rpx;
  .user_icon {
    padding: 0 20rpx;
    image {
      width: 88rpx;
      border-radius: 50%;
    }
  }

  .user_desc {
    view.user_name {
      color: #000;
      font-weight: 600;
    }

    .user_time {
      color: #c0c0c0;
      font-size: 20rpx;
      padding: 10rpx 0;
    }
  }
}

//点赞/收藏
.user_rank {
  display: flex;
  height: 80rpx;
  border: 5rpx solid #eee;
  .rank {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    .icondianzan {
    }
  }

  .user_collect {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    .iconshoucang {
    }
  }
}

.high_img {
  border: 1rpx solid #eee;
}

//专辑
.album_wrap {
  padding: 20rpx;
  .album_title {
    padding: 10rpx 0;
  }

  .album_list {
    .album_item {
      display: flex;
      padding: 10rpx 0;
      border-bottom: 10rpx solid #eee;
      .album_cover {
        flex: 1;
        image {
          width: 180rpx;
          height: 180rpx;
        }
      }

      .album_info {
        flex: 3;
        padding-left: 20rpx;
        position: relative;
        .album_info_text {
          width: 100rpx;
          height: 50rpx;
          background-color: $color;
          color: #fff;
          display: flex;
          justify-content: center;
          align-items: center;
        }

        .album_name {
          padding: 10rpx 0;
          color: #888;
        }

        .iconfont {
          font-size: 40rpx;
          position: absolute;
          top: 50%;
          transform: translateY(-50%);
          right: 10%;
          color: #000;
        }
      }
    }
  }
}

//最热评论
.comment {
  .comment_title {
    padding: 15rpx;
    .iconfont {
      color: red;
      font-size: 40rpx;
    }

    .comment_text {
      font-weight: 600;
      font-size: 28rpx;
      color: #666;
      margin-left: 10rpx;
    }
  }

  .comment_list {
    .comment_item {
      border-bottom: 15rpx solid #eee;
      //用户信息
      .comment_user {
        display: flex;
        padding: 20rpx 0;
        .user_icon {
          width: 15%;
          display: flex;
          justify-content: center;
          align-content: center;
          image {
            width: 60%;
          }
        }

        .user_name {
          flex: 1;
          .user_nicename {
            color: #777;
          }

          .user_time {
            color: #ccc;
            font-size: 24rpx;
            padding: 5rpx 0;
          }
        }

        .user_badge {
          margin-right: 10rpx;
          image {
            width: 40rpx;
            height: 40rpx;
            display: inline-block;
          }
        }
      }

      //评论数据
      .comment_desc {
        display: flex;
        padding: 20rpx 0;
        .comment_content {
          flex: 1;
          padding-left: 15%;
          color: #000;
        }

        .comment_like {
          text-align: right;
          margin-right: 10rpx;
          .iconfont {
          }
        }
      }
    }
  }
}

//最新评论
.iconpinglun {
  color: aqua !important;
}

//下载
.download {
  height: 120rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  .download_btn {
    width: 90%;
    height: 70%;
    background-color: $color;
    color: #fff;
    font-size: 40rpx;
    font-weight: 600;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}
</style>